Question

Rezolvați în Z inecuația: 2x − 3(x − 1) < 27 − 5x

Answer 1

Răspuns:

2x-3x+3<27-5x

-1x+5x<27-3

4x<24 | ÷4

x<6

x€ Z =>

x€{ -infinit, 0, 1, 2, 3, 4, 5}

Answer 2

2x-3(x-1)<27-5x

2x-3x+3<27-5x

-x+3<27-5x

-x+5x<27-3

4x<24

x<24:4

x<6

x∈{.....,-1,0,1,2,3,4,5}